Deekay Knight

{{Use dmy dates|date=September 2017}} {{Use British English|date=September 2017}} {{Infobox aircraft | name = Knight | logo = | logo_size = | image = | alt = | caption = | long_caption = | other_names = | aircraft_type = Two-seat cabin monoplane | aim = | outcome = | related = | national_origin = United Kingdom | manufacturer = Deekay Aircraft Corporation | design_group = | designer = Sydney Charles Hart-Still | builder = | issuer = | status = | owners = | primary_user = | more_users = | service = | major_applications = | proposals = | prototypes = | number_built = 1 | construction_number = | civil_registration = | military_serial = | radio_code = | requirement = | aircraft_carried = | flights = | total_hours = | total_distance = | construction_date = | introduction = | retired = | first_flight = 1937 | initiated = | in_service = | last_flight = | expected = | developed_from = | variants = | developed_into = | preservation = | fate = | predecessors = | successors = | concluded = }} The '''Deekay Knight''' was a British two-seat cabin monoplane designed by S.C.Hart-Still and built in 1937 by the Deekay Aircraft Corporation at Broxbourne in Hertfordshire, England.<ref name="Orbis"/> It was built to test methods of wing construction that would later be suitable for plastic skinning.

==Development== The Knight was a conventional looking low-wing monoplane, with a fixed tailwheel landing gear, the main legs housed in trouser fairings and powered by a nose-mounted 90 hp (67 kW) Blackburn Cirrus Minor piston engine.<ref name="Orbis" /> It had an enclosed cabin with side-by-side seating for two.<ref name="Jackson" /> It had an unusual wing construction which used four spars and interspars instead of ribs.<ref name="Wing">{{cite magazine | title=Towards Thermoplastics: An Interesting Form of Wing Construction |magazine=Flight | page=100 | url=http://www.flightglobal.com/pdfarchive/view/1937/1937%20-%202056.html| date= 22 July 1937|volume=XXXII |issue=1491}}</ref> Though the wing was made of wood throughout, with a stressed plywood skin, the purpose of its novel construction was to explore methods suitable for later use with plastic materials.<ref name="Wing"/><ref name="JAWA38">{{Harvnb|Grey|1972|pages=35c-36c}}</ref> The wing was tested at the Royal Aircraft Establishment Farnborough and the root fittings but not the wing failed at 12.3 times the weight of the aircraft, well beyond the target load factor of 9.<ref name="Orbis" /> Only one aircraft, registered ''G-AFBA'',<ref>{{cite web|title=Registration G-AFBA |url=http://www.caa.co.uk/docs/HistoricalMaterial/G-AFBA.pdf |publisher=United Kingdom Civil Aviation Authority |accessdate=2009-08-05 |url-status=dead |archiveurl=https://web.archive.org/web/20110606161116/http://www.caa.co.uk/docs/HistoricalMaterial/G-AFBA.pdf |archivedate=2011-06-06 }}</ref> was built which was scrapped sometime during the Second World War.<ref name="Orbis" /><ref name="Jackson"/>

==Specifications== {{Aircraft specs |ref=Jane's All the World's Aircraft 1938,<ref name=JAWA1938>{{cite book |title=Jane's All the World's Aircraft 1938 |editor1-last=Grey |editor1-first=C.G. |year=1938 |publisher=Sampson Low, Marston & company, ltd |location=London |editor2-last=Bridgman |editor2-first=Leonard |pages=35c-36c}}</ref> The Illustrated Encyclopaedia of Aircraft,<ref name="Orbis">{{cite book |title=The Illustrated Encyclopaedia of Aircraft |publisher=Orbis Publications |location=London |date=1985 |page=1420}}</ref> British civil aircraft since 1919 Volume II<ref name=Jackson>{{cite book |last1=Jackson |first1=A. J. |title=British civil aircraft since 1919 Volume II |date=1973 |publisher=Putnam |location=London |isbn=9780370100104 |edition=2nd |page=300}}</ref> |prime units?=imp  |crew=1 |capacity=1 |length ft=22 |length in=10 |length note= |span ft=31 |span in=6 |span note= |height ft=6 |height in=7 |height note= |wing area sqft=140 |wing area note= |aspect ratio= |airfoil= |empty weight lb=850 |empty weight note= |gross weight lb=1450 |gross weight note=normal ::::{{cvt|1300|lb|0}} aerobatic |max takeoff weight lb= |max takeoff weight note= |fuel capacity={{cvt|20|impgal|USgal l|0}} in a tank behind the seats |more general=  |eng1 number=1 |eng1 name=Blackburn Cirrus Minor |eng1 type=4-cylinder air-cooled inverted in-line piston engine |eng1 hp=90 |eng1 note=

|prop blade number=2 |prop name=fixed-pitch propeller |prop dia ft= |prop dia in= |prop dia note=  |max speed mph=125 |max speed note= |cruise speed mph=105 |cruise speed note=at {{cvt|3000|ft|0}} w *'''Landing speed without flaps:''' {{cvt|48|mph|kn km/h|0}} *'''Landing speed with flaps:''' {{cvt|39|mph|kn km/h|0}} |stall speed mph= |stall speed note= |never exceed speed mph= |never exceed speed note= |range miles= |range note= |ferry range miles= |ferry range note= |endurance= |ceiling ft=17500 |ceiling note= |climb rate ftmin=800 |climb rate note= |time to altitude= |lift to drag= |wing loading lb/sqft= |wing loading note= |fuel consumption lb/mi= |power/mass= |more performance= }}

==References== {{reflist}}

===Works cited=== * {{cite book |title=Jane's All the World's Aircraft 1938 |last=Grey |first=C.G. |year=1972 |publisher=David & Charles |location=London |isbn=0-715-35734-4}}

Category:1930s British civil utility aircraft Category:Low-wing aircraft Category:Single-engined tractor aircraft Category:Aircraft first flown in 1937